immerse vs souse

immerse is not a noun while souse is a noun.

Word	Noun	Adjective	Verb	Adverb
immerse	No	No	Yes	No
souse	Yes	No	Yes	No

As verbs, souse is a hyponym of immerse; that is, souse is a word with a more specific, narrower meaning than immerse:

Other hyponyms of immerse include dip, dunk, dip, douse, dunk, plunge, dip, dip, submerge, submerse, soak, sheathe.

immerse (noun)	souse (noun)
	the act of making something completely wet
	pork trimmings chopped and pickled and jelled
	a person who drinks alcohol to excess habitually

immerse (verb)	souse (verb)
devote (oneself) fully to	cook in a marinade
cause to be immersed	cover with liquid; pour liquid onto
thrust or throw into	become drunk or drink excessively
enclose or envelop completely, as if by swallowing	immerse briefly into a liquid so as to wet, coat, or saturate